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  • Using GSM Mobile Phone to Switch Appliances

    Hi, I'm interested in doing the same kind of thing, but with a pump and a reservoir. As is illustrated in the image. The only thing is the pump is about 500m from the reservoir. I wish to have a GSM unit at the pump and a GSM unit at the reservoir. Is it possible for the Arduino boards to communicate with each other so no input from a mobile phone is requiered?

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